appreciation vs favor

appreciation

noun
  • The act of appreciating. 

  • A rise in value. 

  • A fair valuation or estimate of merit, worth, weight, etc.; recognition of excellence; gratitude and esteem. 

  • Accurate perception; true estimation. 

favor

noun
  • Goodwill; benevolent regard. 

  • A small gift; a party favor. 

  • Mildness or mitigation of punishment; lenity. 

  • A kind or helpful deed; an instance of voluntarily assisting (someone). 

  • Partiality; bias 

  • The object of regard; person or thing favoured. 

verb
  • To resemble; especially, to look like (another person). 

  • To do a favor [noun sense 1] for; to show beneficence toward. 

  • To look upon fondly; to prefer. 

  • To use more often. 

  • To encourage, conduce to 

  • To treat with care. 

How often have the words appreciation and favor occurred in a corpus of books? (source: Google Ngram Viewer )